BLM18BD221SZ1D

Chip Ferrite Bead Overview

The Murata BLM18BD221SZ1D is a single ferrite chip bead in a 0603 (1608 metric) SMD package. It provides an impedance of 220 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 200 mA and has a maximum DC resistance of 450 mOhms. It operates within a temperature range of -55°C to +125°C. Physical dimensions are 1.6 mm in length, 0.8 mm in width, and 0.6 mm in height.

Chip Ferrite Bead Feature Summary

• Provides high impedance for noise suppression in electronic circuits
• Designed for surface mount technology integration
• Capable of handling specified direct current loads without saturation

Chip Ferrite Bead Applications

• General purpose noise filtering in consumer electronics
• Signal line protection in portable devices
• Power supply input/output decoupling

Chip Ferrite Bead Procurement Notes

Verify the specific suffix 'SZ1D' against official Murata documentation to confirm the exact physical height and current rating specifications. Ensure the procurement channel provides valid RoHS compliance details as indicated in manufacturer records. Cross-reference the impedance value at 100 MHz to match circuit design requirements precisely before ordering.

Chip Ferrite Bead Selection Notes

Select this component when a 0603 footprint is required for space-constrained designs. The 200 mA current rating suits low-power signal lines rather than high-current power rails. Compare the 450 mOhm DC resistance against voltage drop constraints in the target application. Consider the 0.6 mm profile if vertical clearance is limited compared to standard 0.8 mm beads.

Chip Ferrite Bead Part Context

This part belongs to the BLM18 series of ferrite beads manufactured by Murata Electronics. The series offers various impedance and current combinations in a standardized 0603 case size. The BD variant typically denotes specific material characteristics optimized for broadband noise absorption. This component serves as a passive filter element in modern printed circuit board assemblies.

Chip Ferrite Bead Replacement Considerations

Check Murata's official substitution guide for equivalent parts within the BLM18 family that share identical impedance and current ratings. Verify mechanical compatibility with existing footprints. Confirm electrical performance matches at the operating frequency.